Jiamusi is a prefecture-level city in eastern Heilongjiang province, People's Republic of China. Located along the middle and lower reaches of the Songhua River, it faces Russia's Khabarovsk Krai across the Ussuri River and the Amur River. In 2007 Jiamusi had a GDP of RMB 34.1 billion with a 14.3% growth rate.Its population is 2,552,097 at the 2010 census whom 850,750 live in the built up area made of 4 urban districts.